Zahara P., Lis Ocktty, Cantika Setya Permatasari, Imam Supriyadi, and Anggun Andreyani. “The Coal Bio-Solubilization Technology for Energy Security”. Indonesian Journal of Energy 4, no. 1 (February 26, 2021): 1-12. Accessed May 5, 2025. https://www.ije-pyc.org/IJE/article/view/101.